for cas in range(int(input())):
    n = int(input())
    A = [1] * n
    # print(A)
    for i in range(1, len(A)): A[i] += A[i - 1]
    # print(A)
    for i in range(1, len(A)): A[i] += A[i - 1]
    # print(A)
    print(sum(A))